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Physics - EM Waves Question with Solution | TestHub

PhysicsEM WavesElectromagnetic spectrumEasy2 minPYQ_2013

PhysicsEasysingle choice

Photons of an electromagnetic radiation has an energy $11 keV$ each. To which region of electromagnetic spectrum does it belong ?

Question diagram: Photons of an electromagnetic radiation has an energy 11 keV

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Answer:

Solution:

$E = \frac{hc}{λ} \Rightarrow λ = \frac{hc}{E}$ $\Rightarrow λ = \frac{6.6 \times 1 0 ^{- 34} \times 3 \times 1 0 ^{8}}{11 \times 1000 \times 1.6 \times 1 0 ^{- 19}}$ $= 12.4 \overset{˚}{A}$
wavelength range of visible region is $4000 \overset{˚}{A}$ to $7800 \overset{˚}{A}$

Stream:JEESubject:PhysicsTopic:EM WavesSubtopic:Electromagnetic spectrum

⏱ 2mℹ️ Source: PYQ_2013

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